Improved interstitial and intravascular MR imaging coils

Author

Konyer, N.B. ; Viswanathan, R. ; Raghavan, R. ; Mills, G. ; Brady, M. ; Bronskill, M.J.

Author_Institution

Sunnybrook & Women´´s Coll. Health Sci. Centre, Toronto Univ., Ont., Canada

fYear

2002

fDate

2002

Firstpage

963

Lastpage

965

Abstract

An improved intravascular (IV) and interstitial (IS) prototype magnetic resonance (MR) imaging coil design offers dramatic gains in signal-to-noise ratio (SNR) and imaging volume. A multi-turn rectangular solenoid was wound inside catheters with 1.7 mm (IV) and 3.0 mm (IS) diameters. A factor of 200 in peak SNR gain over the standard birdcage head coil was observed, with the region of improved SNR persisting for a radial distance of 10 and 15 mm respectively. Very high resolution ex-vivo intravascular images and very high sensitivity MR spectroscopy (MRS) are demonstrated. This coil design offers interesting performance options in SNR and imaging volume compared to existing FDA-approved catheter coil designs.

Keywords

NMR spectroscopy; biomedical MRI; blood vessels; catheters; solenoids; 1.7 mm; 10 mm; 15 mm; 3.0 mm; catheters; coil design; imaging volume; interstitial MR imaging coils; intravascular MR imaging coils; magnetic resonance imaging coil design; multi-turn rectangular solenoid; peak SNR gain; radial distance; signal-to-noise ratio; very high resolution ex-vivo intravascular images; very high sensitivity MR spectroscopy; Catheters; Coils; Head; Magnetic resonance; Magnetic resonance imaging; Prototypes; Signal design; Signal to noise ratio; Solenoids; Wounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Imaging, 2002. Proceedings. 2002 IEEE International Symposium on

Print_ISBN

0-7803-7584-X

Type

conf

DOI

10.1109/ISBI.2002.1029422

Filename

1029422